The compiled code has no functions #2989
Description
hello, I'm learning Rust from Java, I'm interested in Rust, and recently I had a difficulty compiling to wasm using Rust+ffmpeg hybrid, bindgen couldn't generate the ffi function I needed.
ffmpeg code location: The "tripartite/ffmpeg" folder in the project project directory. Versions of bindgen I have tried :0.69.5, 0.70.1.
Compile command: cargo build --release --target wasm32-unknown-unknown
System environment：
bindgen version: 0.69.5 - 0.70.1
OS: MacOs Sonoma Version 14.5
Rust edition : "2021"
Rustc Version: rustc 1.82.0 (f6e511eec 2024-10-15)
Cargo Version: cargo 1.82.0 (8f40fc59f 2024-08-21)
CPU: Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
emsdk: The *recommended* precompiled SDK download is 3.1.72 (7a360458327cd24c2a7aab428bdbcb5bca8810e4).
To install/activate it use:
latest
This is equivalent to installing/activating:
3.1.72 INSTALLED
emcc Version: emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.72 (437140d149d9c977ffc8b09dbaf9b0f5a02db190)
clang Version:
Apple clang version 16.0.0 (clang-1600.0.26.4)
Target: x86_64-apple-darwin23.5.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
This is an error message
error[E0425]: cannot find function `avformat_alloc_context` in this scope
--> src/lib.rs:26:56
|
26 | let mut format_context: *mut AVFormatContext = avformat_alloc_context();
| ^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `av_malloc` in this scope
--> src/lib.rs:33:22
|
33 | let buffer = av_malloc(buffer_size) as *mut u8;
| ^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_free_context` in this scope
--> src/lib.rs:35:13
|
35 | avformat_free_context(format_context);
| ^^^^^^^^^^^^^^^^^^^^^ help: a local variable with a similar name exists: `format_context`
error[E0425]: cannot find function `avio_alloc_context` in this scope
--> src/lib.rs:56:26
|
56 | let io_context = avio_alloc_context(
| ^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `av_free` in this scope
--> src/lib.rs:67:13
|
67 | av_free(buffer as *mut std::os::raw::c_void);
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_free_context` in this scope
--> src/lib.rs:68:13
|
68 | avformat_free_context(format_context);
| ^^^^^^^^^^^^^^^^^^^^^ help: a local variable with a similar name exists: `format_context`
error[E0425]: cannot find function `avformat_open_input` in this scope
--> src/lib.rs:75:12
|
75 | if avformat_open_input(&mut format_context, ptr::null_mut(), ptr::null_mut(), ptr::null_mut()) < 0 {
| ^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_free_context` in this scope
--> src/lib.rs:77:13
|
77 | avformat_free_context(format_context);
| ^^^^^^^^^^^^^^^^^^^^^ help: a local variable with a similar name exists: `format_context`
error[E0425]: cannot find function `avformat_find_stream_info` in this scope
--> src/lib.rs:82:12
|
82 | if avformat_find_stream_info(format_context, ptr::null_mut()) < 0 {
| ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_close_input` in this scope
--> src/lib.rs:84:13
|
84 | avformat_close_input(&mut format_context);
| ^^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_close_input` in this scope
--> src/lib.rs:101:13
|
101 | avformat_close_input(&mut format_context);
| ^^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `avformat_close_input` in this scope
--> src/lib.rs:114:9
|
114 | avformat_close_input(&mut format_context);
| ^^^^^^^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find function `av_free` in this scope
--> src/lib.rs:153:5
|
153 | av_free((*io_context).buffer as *mut c_void);
| ^^^^^^^ not found in this scope
error[E0425]: cannot find function `av_free` in this scope
--> src/lib.rs:154:5
|
154 | av_free(io_context as *mut c_void);
| ^^^^^^^ not found in this scope